Paster band for roll films



April 10, 1928.

E. J. WARD FASTER BAND FOR ROLL FILMS Filed March 2 A TTORNEYS.

Patented Apr. 10, 1928.

FE-ICE.

\ I ERWIN J". WARD, OF ROCHESTER, NEW YORK, ASSIGNOR TO EASTMAN KODAKCOM- IPANY, OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

FASTER BAR D FOR ROLL FILMS.

App1ication filed March 28, 1927. Serial No. 178,985.

This inventiomrelates to photography and more particularly to fasteningdevices for joining parts of the interwound paper and film strips whichare commonly referred to as film cartridges. One object of my inventionis to provide a paster which may be interwound between convolutions of afilm cartridge in which premature adhering will be prevented. Anotherobject of my invention is to provide a paster band for film cartridgesin which there are adhesive and nonadhesive areas, at least a portion ofthe latter area being provided with raised lines or protuberancesagainst which the adhesive area may be folded to prevent sticking.Another object is to provide a paster band which is suitable for use infilm cartridges, and which may be readily .reeled through a camera.Other objects will appear from the following specification, the novelfeatures being particularly pointed out in the claims at the endthereof.

This invention is for an improvement over the paster band shown in U. S.Patent No.

1,532,785, A.,F. Sulzer, April 7, 1925.

through the paster band alone, the thickness of the material being'shownon a greatly enlarged scale;

Fig. 3 is a side elevation of a typical film cartridge unrolled betweentwo spools shown in section, the film cartridge being equipped with apaster constructed in accordance with my invention;

Fig. 4 is a bottom shown in Fig. 1; v

Fig. 5 is a similar view of the second embodiment of my invention Fig. 6is a greatly enlarged detailsection on line 6-6 .of Fig. 5; and

Fig. 7 is a plan view of still another embodiment of my invention.

My invention consists in providing a paster. band with an irregularembossed surface which has an adhesive area adapted to plan view of thepaster be folded over against the embossed area so that the majorportion of the adhesive may be spaced from the paster band material.

In the embodiment of my invention shown; in Fig. 1 there is a filmcartridge comprising the usual spoolcore 1 and flanges 2. Convolutionsof material 3 are wound upon the spool in the usual manner, and thesemay consist of a film strip which may be united bya suitable adhesive at5 to a paster band 6, this being preferably bent at 7 so that the secondadhesive area 8 may face a portion of the paster band material. The filmand paster may be interwound with a protective paper covering 9. Asshown in Fig. 3 the end of the film 4 opposite the paster 6 is attachedto a paster 16 which is fastened to the film at. 18 and to the backingpaper at 17.

As best shown in Fig. 2, I' prefer to form the paster band of corrugatedor otherwise roughened material, and for best results these corrugationsor roughened portions should consist of a series of regular or irregularrelatively small bends in the material which produces a series ofprotuberances 14 which form a small portion of the total area .of thepaster band. In the form shown in this view the corrugations consist ofa series of irregularly formed up portions 13. leaving a series ofirregular line like protuberances 14. The adhesive material may becoated on the end 11 of the paster hand and this is preferably placed onin a fluid form so that the small cup shaped portions 15 may become fullof the adhesive. The sec-' ond'adhesive area 12 may be similarly coatedon the paster material, and before the film cartridge is completelyassembledthe paster may'be bent at 7 so that the adhesive area 12 mayface a series of protuberances 14 which space. the adhesive from themajor portion of the area of the paster band.

With the paster formed as above described it is obvious that the bendingline 7 is immaterial since it is only'necessary to produce the desiredresult that the adhesive 12 faces the protuberances 14. When the filmcar tridge is so spooled even if the adhesive 12 1 becomes slightlymoist, it will not adhere to the'surface of the paster because of itsirregular contour; whereas if the;fold 7 hasnot been made the adhesivemay radily adhere to the backing paper 9, and thus prevent the film frompassing properly through the camera.'

. In Figs. and 6 another embodiment of my invention is shown wherein thepaster 26 may be made of ordinary smooth stock and the area 27 remainsuncorrugated. Adhesive areas 21 and 22 may be coated on the stock 1 inthe usual manner and a relatively small area of the paster .may berougl1ened, as shown here by a diamond shaped knurl.

'Here the paster 26 has been rolled so as to form the relatively largearea23 spaced. at one side of the protuberances 24 which, in thisinstance, are in'the shape of crossing lines. i

The adhesive material 22 is folded against thediamond shaped knurlsalong a line 7* so that the face of the adhesive may be spaced from thepaster band material by the protuberances 24. r

This type of paster, ofcourse, requires that the adhesive be folded insuch a manner that. it will not project beyond the knurled area of thepaster because if it did the adhesive could easilyadhere to the material27.

In the first four figures a paster has been shown, the entire surface ofwhich has been roughenedpr corrugated. InFig. 5 a small area of thepaster has been corrugated adjacent one adhesive area. In still anotherembodiment of my invention shown in Fig. 7, two roughened areas areprovided opposite two adhesive areas. Here the paster 36 is made ofsmooth material 37. havingvadhesive' areas 31 and 32 at each'end. Aseriesof protuberances 34 is rolled into paster material "so that theseprotuberancesiproject a slight distance beyond the surface of thematerial 33 from which they are formed. The protuberances areofsufi'icient-height to space the adhesive areas from the major part ofthe paster band when these areas are foldid upon the roughened areas ofthe paster an r Y Although I do not wish to be limited to the particularshape, size, or position of the roughening or embossing used to preventthe adhesive area from sticking to the paster band, I have found that anentirely satisfactory paster can. be made from material about .0035 ofan inch in thickness byroughening the material so that the totalthickness will be increased to .0055 of an inch.

This thickness will no doubt be somewhat reduced when wound in theconvolutions of the film cartridge, but this does not flatten out theprotuberances to such an. extent that they permit the area oftheadhesive to lie against the paster band in sufficiently closerelation to cause the adhesive to prematurely adhere to the paster band.It is to be understood that these dimensions are by way of illustrationand they may be widely varied w1thout departing from my invention. The

ideal paster, of course, is as thin as can be I claim a's,new and desireto secure by- Letters Patent isf;

1. A photographic film cartrldge including a spool, a flexible strip ofprotective'material wound thereon, a flexible strip of film interwoundtherewith, a paster band ada ted to join the protective materlal and jin,

said paster band including an adhesive area,

and an embossed area adapted to space the adhesive from the paster whenfolded against the embossings, said vpasterbeing interwound with thefilm and protective covering.

2. In combination, a flexible rotective strip and afilm strip adapted toe wound together on a spool, a paster band of flexible material adaptedto fasten the two strips together, said paster having an area providedwith protuberances and areas covered with adhesive, one adhesive areajoining the paster band to one of the strips,-and the other adhesivearea being folded over against theprotuberanees whereby the adhesive isspaced from the paster to prevent I premature adhesion.

3. In combinat' on, a photographic cartridge including a series ofconvolutions of film protective covering strip and film strip wound upona spool, a paster band for joining the two strips together adapted to beinterwound in the convolutions of strip material, said paster bandhaving'an adhesive area attached to one strip of material, and anotheradhesive area folded to face the adhesive area toward the paster-band,and means included in the paster band to space the adhesive from themajor portion thereof."

4;- A flexible paster band for photographic film cartridges consistingof sheet material having anadhesive area and an area provided withprojections against which the ladhsive area may be folded.

5. A flexible paster band for film car tridgesconsisting of sheetmaterial having an adhesive area, an area the surface of Y which isformed ipto a non-plane surface against which the adhesive area may befolded.

6. A flexible tridges consisting of sheet'material having an adhesivearea, an area the surface of which is formed into a. non-plane surfacearranged so that a minor portion of the area paster band for film carprojects fromj the major p ortion of the 4 formed up area, said adhesivearea being poover against the corrugatlons.

' 1 sitioned relative to the minor portion of the 8. A flexible pasterband corrugations formed therein saidcorruga-.

tions comprising adjacent walls curved 1n gations. for film cart-ridgesconsisting of sheet material having cross sections terminating in ridgesformmg a relatively small part of the total area of the paster, and anadhesive area adapted to be folded against the ridges. V

9 A flexible paster band tridges' consisting of sheet material havingcorrugations formed over the entire area for film car--' thereof, anadhesive area coated on the pastoradapted to be folded over against thecorru- Signed at Rochester,- New York, thi 23 dayfof March, 1927, v

mw J. WARD.

